benchlm.ai

Claude Opus 4.6 vs GPT-5 (high)

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

Claude Opus 4.6 wins overall with a score of 86 vs 72 (14 point difference).Claude Opus 4.6 wins 4 out of 4 categories.

Claude Opus 4.6

CreatorAnthropic
TypeProprietary
Context1M
Score86

GPT-5 (high)

CreatorOpenAI
TypeProprietary
Context128K
Score72

Knowledge

Claude Opus 4.6

Claude Opus 4.6

96

GPT-5 (high)

90

99
MMLU
93
97
GPQA
91
95
SuperGPQA
89
93
OpenBookQA
87

Coding

Claude Opus 4.6

Claude Opus 4.6

91

GPT-5 (high)

85

91
HumanEval
85

Mathematics

Claude Opus 4.6

Claude Opus 4.6

97.1

GPT-5 (high)

94

99
AIME 2023
95
99
AIME 2024
97
98
AIME 2025
96
95
HMMT Feb 2023
91
97
HMMT Feb 2024
93
96
HMMT Feb 2025
92
96
BRUMO 2025
94

Reasoning

Claude Opus 4.6

Claude Opus 4.6

94

GPT-5 (high)

88

95
SimpleQA
89
93
MuSR
87

Frequently Asked Questions

Which is better, Claude Opus 4.6 or GPT-5 (high)?

Claude Opus 4.6 scores higher overall with 86 vs 72, a difference of 14 points across all benchmarks.

Which is better for knowledge tasks, Claude Opus 4.6 or GPT-5 (high)?

Claude Opus 4.6 leads in knowledge tasks with an average score of 96 vs 90.

Which is better for coding, Claude Opus 4.6 or GPT-5 (high)?

Claude Opus 4.6 leads in coding with an average score of 91 vs 85.

Which is better for math, Claude Opus 4.6 or GPT-5 (high)?

Claude Opus 4.6 leads in math with an average score of 97.1 vs 94.

Which is better for reasoning, Claude Opus 4.6 or GPT-5 (high)?

Claude Opus 4.6 leads in reasoning with an average score of 94 vs 88.

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